/* Grouped top-left with the back-to-menu house icon, so every persistent
   HUD control lives in one place instead of being split across corners. */
.hud-corner-left {
  position: fixed;
  top: 18px;
  left: 20px;
  z-index: 30;
  display: flex;
  gap: 8px;
}

.corner-toggle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14, 16, 20, 0.75);
  border: 1px solid var(--panel-border);
  color: var(--osd-dim);
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.corner-toggle:hover { border-color: var(--panel-border-strong); background: rgba(20, 22, 27, 0.9); color: var(--osd); }

#muteToggle .icon-muted { display: none; }
#muteToggle.is-muted .icon-unmuted { display: none; }
#muteToggle.is-muted .icon-muted { display: block; }

.vr-toggle-btn.is-active { border-color: var(--accent); color: var(--accent); }

.settings-panel {
  position: fixed;
  top: 60px;
  left: 20px;
  z-index: 30;
  width: min(360px, 92vw);
  max-height: calc(100vh - 84px);
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Author CSS always beats the UA [hidden] rule regardless of specificity —
   without this, `display: flex` above would keep the panel visible even
   with the `hidden` attribute set (this was the "close button does
   nothing" bug). */
.settings-panel[hidden] { display: none; }

.settings-header {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--panel-border);
}

.settings-header h2 {
  margin: 0;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.settings-tabs {
  display: flex;
  flex-shrink: 0;
  gap: 2px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--panel-border);
  overflow-x: auto;
  scrollbar-width: none;
}
.settings-tabs::-webkit-scrollbar { display: none; }

.settings-tabs .tab {
  flex: 1;
  min-width: 0;
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 8px 4px;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--osd-dim);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}

.settings-tabs .tab:hover { color: var(--osd); }
.settings-tabs .tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.settings-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px 16px 20px;
  font-size: 11.5px;
  scrollbar-width: thin;
  scrollbar-color: var(--panel-border-strong) transparent;
}
.settings-body::-webkit-scrollbar { width: 8px; }
.settings-body::-webkit-scrollbar-track { background: transparent; }
.settings-body::-webkit-scrollbar-thumb {
  background: var(--panel-border-strong);
  border-radius: 4px;
  border: 2px solid var(--panel-bg-solid);
}
.settings-body::-webkit-scrollbar-thumb:hover { background: var(--osd-faint); }

.tab-pane { display: none; }
.tab-pane.active { display: block; }

.tab-pane h3 {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--osd-dim);
  margin: 20px 0 12px;
  padding-top: 14px;
  border-top: 1px solid var(--panel-border);
}

.tab-pane h3:first-child { margin-top: 0; padding-top: 0; border-top: none; }

.key-list {
  font-size: 11px;
  color: var(--osd-dim);
  line-height: 1.8;
}

.key-list b { color: var(--osd); font-weight: 600; }

.mapping-row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
  font-size: 11px;
  color: var(--osd-dim);
}

.preset-row {
  display: flex;
  gap: 6px;
  margin-bottom: 4px;
}

.preset-row .btn {
  flex: 1;
  padding: 8px 6px;
  font-size: 9.5px;
}

.cal-summary-box {
  font-size: 11px;
  color: var(--osd-dim);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 16px;
  line-height: 1.7;
}
.cal-summary-box .ok { color: var(--safe); }
.cal-summary-box .missing { color: var(--osd-faint); }

.field-disabled { opacity: 0.35; pointer-events: none; transition: opacity 0.15s; }

[data-role="ioStatus"]:empty { display: none; }

.settings-card-wide {
  width: min(640px, 94vw);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  padding: 0;
}
.settings-card-wide .settings-header { padding: 20px 26px 14px; }
.settings-card-wide .settings-tabs { padding: 8px 22px; }
.settings-card-wide .settings-body { padding: 20px 26px 28px; }

@media (max-width: 640px) {
  .settings-panel { top: 58px; right: 50%; transform: translateX(50%); width: 94vw; }
}